Split data from a single modem to four RS-232 DTEs. Passive, non-powered. Operates transparent to data formats and speeds. 4-Port RJ-45 Modem Splitter (RS-232 on RJ-45) Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 • Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 • Web site: www.blackbox.com • E-mail: [email protected]Customer Support Information TL421A
Transcript
BLACK BOX®
Split data from a single modem to four RS-232 DTEs.
Passive, non-powered. Operates transparent to data formats and speeds.
4-Port RJ-45 Modem Splitter (RS-232 on RJ-45)
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 • Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 • Web site: www.blackbox.com • E-mail: [email protected]
Customer Support
Information
TL421A
Page 2 724-746-5500 | blackbox.com
4-Port RJ-45 Modem Splitter (RS-232 on RJ-45)
1. Specifications
Leads Supported — Pins 3, 4, 5, 7, and 8 connected straight through between the Master and Ports1–4; Pins 1, 2, and 6 “diode OR’ed” from Ports 1–4 to the Master port
The 4-Port RJ-45 Modem Splitter (TL421A) is designed to allow multiple terminals to share a single modem. This passive device is non-powered and transparent to data formats, rates, and protocols. Data received from the modem is transmitted to all attached terminal devices. Only one terminal device may send data to the modem at a time. If more than one terminal device sends data at the same time, the data will be corrupted. Connect the Master port to a DCE device, such as a modem, using an RJ-45 straight-through cable and the appropriate RJ/DB adapter. All other ports, labeled Port 1 through Port 4, connect to DTE terminal devices. When connected to DTE devices, you don’t need crossover cables.
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4-Port RJ-45 Modem Splitter (RS-232 on RJ-45)
3. InstallationThere are no user-configurable settings in the 4-Port RJ-45 Modem Splitter. Simply connect your modem or other DCE device to the Master port, and connect your terminals or other DTE devices to Ports 1–4 on the Modem Splitter. For the GND signal and any signals that flow from the DCE to DTE direction, use Pins 3, 4, 5, 7, and 8. For signals that flow from the DTE to DCE direction, use Pins 1, 2, and 6. A typical configuration would be to connect RTS, DTR, and TD to Pins 1, 2, and 6 respectively, and to connect RD, GND, RI, DCD, and CTS to Pins 3, 4, 5, 7, and 8. Once all the connections have been made, power up your modem and terminals as normal. The system is now ready for operation.
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TL421A, version 2
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